Stability of multiquantum vortices in dilute Bose-Einstein condensates

Details Stability of multiquantum vortices in dilute Bose-Einstein condensates Stability of multiquantum vortices in dilute Bose-Einstein condensates

2001-09-14

arxiv.org/abs/cond-mat/0109272v1

Phys. Rev. A 65, 033614 (2002)

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 4 figures

Scientific paper

10.1103/PhysRevA.65.033614

Multiply quantized vortices in trapped Bose-Einstein condensates are studied using the Bogoliubov theory. Suitable combinations of a localized pinning potential and external rotation of the system are found to energetically stabilize, both locally and globally, vortices with multiple circulation quanta. We present a phase diagram for stable multiply quantized vortices in terms of the angular rotation frequency and the width of the pinning potential. We argue that multiquantum vortices could be experimentally created using these two expedients.

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